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California Mussel
Mytilus californianus
45.3428, -123.97
Field Notes
Description:
The shell of this species is thick and is often 80 to 130 mm in length, sometimes larger still. The shell is blue on the outside with a heavy brown periostracum which is usually worn off except near the growing edge of the shell.
Habitat:
California mussels are found clustered together, often in very large aggregations, on rocks in the upper intertidal zone on the open coast, where they are exposed to the strong action of the surf.
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